Учебник английского языка для технических университетов и вузов Издание шестое, стереотипное

• Название: Учебник английского языка для технических университетов и вузов Издание шестое, стереотипное
• Анкор: orlovskaya.docx
• Дата: 12.12.2017
• Размер: 1.44 Mb.
• Имя файла: orlovskaya.docx
• Тип: Учебник; #11112
• страница: 22 из 63

Прочитайте текст и найдите абзацы, в которых сообщается о результатах и значении проведенных экспериментов по производству материалов в космосе. Переведите

Made in Space

This label «Made in Space» for industrial materials will probably surprise no one in the not so distant future. They may include superconductors, new kinds of alloys, substances with peculiar magnetic properties, supertransparent laser glass¹, polymers, plastics, and so on. Numerous experiments carried out at the Russian orbital space stations have paved the way² to the development of methods and means of industrial production of new materials of better quality on board a spacecraft³. Experts estimate that within a few coming years industrial production of various materials will be started in space.

Conditions on board a space vehicle orbiting Earth greatly differ from those on its surface. However, all of these conditions can be simulated⁴ on Earth, except for one — prolonged weightlessness. Weightlessness can be created on Earth, but only for a few seconds. A space flight is another matter: a satellite orbiting Earth is in a dynamic zero-gravity state, i.e., when gravity is cancelled out⁵ by inertia.

What can weightlessness be used for? Many well-known processes go on differently due to the absence of weight. The Archimedes principle is no longer valid and, consequently, stable-state⁶ liquid mixtures can be obtained, the components of which would immediately separate on Earth because of different density. In case of melts⁷ of metals, glasses or semiconductors, they can be cooled down to the solidification point even in space and then brought back to Earth. Such materials will possess quite unusual qualities.

In space there is no gravitational convection⁸, i.e., movements of gases or liquids caused by difference of temperatures. It is well-known that various defects in semiconductors occur because of convection. Biochemists also have to deal with the worst aspects of convection, for example, in the production of superpure biologically active substances. Convection makes it very difficult on Earth.

Following the launch of the first orbital stations the specialists started experiments aimed at proving the advantages of the zero-gravity state for the production of certain materials. In this country all orbital stations from Salyut 5 onwards were used for that purpose, as well as rockets. Since 1976 over 600 technological experiments have been carried out on board manned and unmanned space vehicles.

The experiments proved that many of the properties of the materials obtained under the zero-gravity condition were much better than those produced on Earth. Besides, it has been established that it is necessary to develop a new science — physics of the weightless state — which forms the theoretical basis for space industry and space materials study. This science has basically been developed. The methods of mathematical modelling of the hydromechanical process under the zero-gravity condition have been created with the help of computers.

Special space vehicles will also be needed for industrial production of new-generation materials. Research has shown that the acceleration rate on board these vehicles must be reduced to the minimum. It was found that space platforms in independent flight carrying the equipment were most suitable for producing materials. These vehicles will have to use their own propulsion systems to approach their base orbital station after a certain period of time. The cosmonauts on board the station can replace the specimens. Many new and very interesting projects are planned for orbital stations. Here is one of them. Convection does not allow to grow large protein crystals on Earth. But it is possible to grow such crystals under the zero-gravity condition and to study their structure. The data obtained during the experiments can be useful for the work of laboratories on Earth in using the methods of gene engineering⁹. Thus, it may be possible to make new materials in space and also to obtain valuable scientific data for new highly efficient technologies on Earth.

Preparatory work for industrial production in space at a larger scale is being carried out in Russia, the USA, Western Europe and

Japan. It should be said that according to the estimates of American experts production of materials in space is to bring 60 billion dollars in the future.

Notes to the Text

1. 
   supertransparent laser glass — сверхпрозрачное лазерное стекло
   
2. 
   to pave the way — проложить путь
   
3. 
   on board (a spacecraft) — на борту (космического корабля)
   
4. 
   to simulate — моделировать, имитировать
   
5. 
   to cancel out — уничтожать, уравновешивать
   
6. 
   stable-state — устойчивое состояние
   
7. 
   in case of melts — в случае расплавов
   
8. 
   gravitational convection — гравитационная конвекция (перенос тепла под действием силы тяжести)
   
9. 
   gene engineering — генная инженерия
   

УПРАЖНЕНИЯ

Упражнение 17. Просмотрите текст 6А и ответьте на вопросы.

1. What is this text about? 2. Have you seen the label «Made in Space» anywhere? 3. Why can’t certain materials be produced on Earth? 4. Can all the conditions on board a space vehicle be simulated on Earth? 5. When will it be possible to start industrial production of materials in space? What do you think about it? Can we start such production now? 6. Why can we obtain materials of better quality in space? 7. What equipment is needed for producing materials in space? 8. How will this equipment operate?

Упражнение 18. Составьте утверждения, выбрав правильный вариант согласно тексту 6А.

1. 
   Many well-known processes go on differently in space due to
   

1. 
   different density.
   
2. 
   the presence of weight.
   
3. 
   the absence of weight.
   

2. 
   The components of stable-state liquid mixtures would separate on Earth because of
   

1. 
   high temperature.
   
2. 
   different density.
   
3. 
   different conditions.
   

3. 
   It is well-known that various defects in semiconductors occur because of
   

1. 
   weightlessness.
   
2. 
   solidification.
   
3. 
   convection.
   

Упражнение 19. Найдите в тексте 6А модальные глаголы и их эквиваленты. Замените эквиваленты соответствующими модальными глаголами.

Упражнение 20. Выберите соответствующий модальный глагол.

1. Do you live far? (Can, must) we meet here at 7 o’clock? — We certainly (may, can). — I’ll see you later this evening, then.

2. 
   Bill, would you help me? Sure, I’d be glad to help you. What (may, can) I do for you? 3. (Can, may) I take your pen? I’ve broken mine. 4. Do you know when Bob comes back from the University? I am afraid he (can, may) be very late. He has an examination tomorrow. He (can, must) study for the examination. 5. Do you have a stamp (марка)? — No, I’m afraid I don’t. You (may, must) go to the post office for this. 6. I’m very much interested in environment problems. I think we (must, may) learn to live in harmony with nature.
   

Упражнение 21. Укажите предложения с модальными глаголами, выражающими необходимость совершения действия. Переведите.

1. 
   As telegraph wires couldn’t be hung over the ocean, cables had to be laid on the floor of the Atlantic Ocean. 2. In the next few years engineers are to develop computers of more than 2 billion operations a second. 3. A new kind of telephone may be called a video-phone. 4. One must know that we shall need a lot of specialists that will be able to work and live in space for a long time. 5. To see distant objects clearly, one should change the focus. 6. Within a few coming years a quantity production of various materials is to begin in space. 7. Some liquid mixture components would immediately separate on Earth because of different density. 8. It should be said that special space vehicles are necessary for industrial production of space materials. 9. Our group will be allowed to use new laboratory equipment next term. 10. One can see that there is no principal difference between iron and copper as conductors.
   

Упражнение 22. Найдите предложения с эквивалентами модальных глаголов to have to, to be to,

1. 
   1. Television has a great number of uses nowadays. 2. Morse discovered that telegraph messages did not have to be written, they could be sent as a sound. 3. That part of this country has become a highly industrial one. 4. Why couldn’t you do it yesterday? — Because I had to go home earlier than usual. 5. This important problem had been solved by the end of 1980. 6. In the past messages to and from Europe had to be sent by ship. 7. Some materials with useful qualities will have to be produced in space. 8. A historian has to study a lot of various facts to be able to reconstruct the far past.
   

В. 1. Such metals as iron, cobalt, nickel and some alloys are much more magnetic than any other substances. 2. In the next few years Russian engineers are to complete the work on supercomputers. 3. The main aim of this article is to explain methods and means of space industrialization. 4. We are living in an electronic world. 5. A number of TV stations are to be linked up into a network. 6. Experiments for industrial production of materials in space are being carried out in many countries. 7. Weightlessness is created on Earth, but only for a few seconds. 8. The quality of these metal parts is to be very high. 9. It was found that the acceleration rate on board such vehicles was to be reduced to a minimum.

УПРАЖНЕНИЯ ДЛЯ САМОСТОЯТЕЛЬНОЙ РАБОТЫ

Упражнение 23. Определите, к каким частям речи относятся слова, и переведите их.

requirement, constituent, scientific, distance, agronomist, ancient, density, differ, hardness, structural, various, magnificent, presence, property, culture, conductor, presentation, probably.

Упражнение 24. Напишите глаголы, соответствующие словам.

surprisingly, difference, equipment, mixture, coming, estimation, weightlessness, production, separately, development, movement, disappearance, functional.

Упражнение 25. Образуйте прилагательные от существительных.

magnet, industry, absence, speciality, weight, probability, orbit, dynamics, preparation, supertransparency, independence, gravitation, superpurity, difficulty, variety.

Упражнение 26. Переведите слова, учитывая значение префикса super-.

supercritical, superactive, supercooled, superalloy, superhard, superplastic.